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// Created by: Neill Broderick :: http://www.bespoke-software-solutions.co.uk/downloads/downjs.php

var mins
var secs;
function start_clock() {
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function init() {
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	var time_run = $('#txt').val();
	var arr_time = time_run.split(":")
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	redo();
}
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} 
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//trả lời của thí sinh
var traloi=new Array()
var so_chude1 = 12
//Tên chủ đề
var chude1 = new Array()
chude1[1] = "Nguyên tử , bảng tuần hoàn các nguyên tố hóa học, liên kết hóa học"
chude1[2] = "Phản ứng oxi hóa- khử, tốc độ phản ứng, cân bằng hóa học"
chude1[3] = "Sự điện ly"
chude1[4] = "Cacbon, silic, nito, oxi, lưu huỳnh, các nguyên tố thuộc nhóm halogen;  các hợp chất của chúng"
chude1[5] = "kim loại"
chude1[6] = "Hữu cơ"
chude1[7] = "Phương pháp bảo toàn khối lượng"
chude1[8] = "Phương pháp bảo toàn electron"
chude1[9] = "Phương pháp bảo toàn nguyên tố"
chude1[10] = "Phương pháp đặt công thức trung bình"
chude1[11] = "Phương pháp tăng giảm khối lượng"
chude1[12] = "Phương pháp bảo toàn điện tích"
//Đường dẫn lý thuyết
var link_chude1 = new Array()
link_chude1[1] = ""
link_chude1[2] = ""
link_chude1[3] = ""
link_chude1[4] = ""
link_chude1[5] = ""
link_chude1[6] = ""
link_chude1[7] = ""
link_chude1[8] = ""
link_chude1[9] = ""
link_chude1[10] = ""
link_chude1[11] = ""
link_chude1[12] = ""
//Số câu đúng
var so_cau_dung_chude1 = new Array()
so_cau_dung_chude1[1] = 0
so_cau_dung_chude1[2] = 0
so_cau_dung_chude1[3] = 0
so_cau_dung_chude1[4] = 0
so_cau_dung_chude1[5] = 0
so_cau_dung_chude1[6] = 0
so_cau_dung_chude1[7] = 0
so_cau_dung_chude1[8] = 0
so_cau_dung_chude1[9] = 0
so_cau_dung_chude1[10] = 0
so_cau_dung_chude1[11] = 0
so_cau_dung_chude1[12] = 0
//Tông số câu
var so_cau_co_chude1 = new Array()
so_cau_co_chude1[1] = 3
so_cau_co_chude1[2] = 7
so_cau_co_chude1[3] = 1
so_cau_co_chude1[4] = 4
so_cau_co_chude1[5] = 9
so_cau_co_chude1[6] = 26
so_cau_co_chude1[7] = 3
so_cau_co_chude1[8] = 3
so_cau_co_chude1[9] = 1
so_cau_co_chude1[10] = 1
so_cau_co_chude1[11] = 2
so_cau_co_chude1[12] = 1
//Danh sách các câu thuộc chủ đề
//PS các câu có 1 chữ sô viết thành 2 chữ số vd: 1 = 01, 2 = 02
var cac_cau_co_chude1 = new Array()
cac_cau_co_chude1[1] = "01,34,47"
cac_cau_co_chude1[2] = "05,10,26,28,35,41,42"
cac_cau_co_chude1[3] = "06"
cac_cau_co_chude1[4] = "02,03,04,07"
cac_cau_co_chude1[5] = "08,09,11,27,30,38,39,43,46"
cac_cau_co_chude1[6] = "12,13,14,15,16,17,18,19,20,21,22,23,24,25,29,31,32,33,36,37,40,44,45,48,49,50"
cac_cau_co_chude1[7] = "18,48,50"
cac_cau_co_chude1[8] = "11,27,46"
cac_cau_co_chude1[9] = "02"
cac_cau_co_chude1[10] = "13"
cac_cau_co_chude1[11] = "30,37"
cac_cau_co_chude1[12] = "09"
//Danh sách đáp án
var dapan=new Array()
dapan[1]='D'
dapan[2]='C'
dapan[3]='C'
dapan[4]='A'
dapan[5]='A'
dapan[6]='D'
dapan[7]='D'
dapan[8]='C'
dapan[9]='C'
dapan[10]='C'
dapan[11]='B'
dapan[12]='B'
dapan[13]='B'
dapan[14]='C'
dapan[15]='B'
dapan[16]='B'
dapan[17]='B'
dapan[18]='A'
dapan[19]='A'
dapan[20]='D'
dapan[21]='C'
dapan[22]='D'
dapan[23]='C'
dapan[24]='A'
dapan[25]='A'
dapan[26]='D'
dapan[27]='C'
dapan[28]='B'
dapan[29]='C'
dapan[30]='B'
dapan[31]='A'
dapan[32]='C'
dapan[33]='A'
dapan[34]='A'
dapan[35]='C'
dapan[36]='D'
dapan[37]='C'
dapan[38]='D'
dapan[39]='B'
dapan[40]='C'
dapan[41]='C'
dapan[42]='A'
dapan[43]='C'
dapan[44]='C'
dapan[45]='A'
dapan[46]='A'
dapan[47]='C'
dapan[48]='C'
dapan[49]='C'
dapan[50]='B'

function dalam(idcau){$(idcau).addClass("dalam");}
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<div align="center">
      <p style="line-height: 200%; margin: 0px;"><font size="5"><a href="http://thidaihockhoia.blogspot.com" target="_blank"><img title="Phấn đấu vì tương lai" alt="trangchuli.html" src="hinhanh6.png"></font></a></p>
      <p style="text-align: center; color: rgb(14, 25, 226); line-height: 200%;"><b><font size="7">ĐỀ 27</font></b></p>
      <p style="text-align: center; color: rgb(14, 25, 226); line-height: 200%;"><strong>Chuyên Hùng Vương – Phú Thọ lần 2-2012</strong></p>
      <p style="line-height: 200%;"><font color="red" size="4"> F5 để làm lại 
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<font size="6"><input id="q1v1" class="css-checkbox" onClick="traloi[1]='A'; dalam('#acau1');" name="q1" value="v1" type="radio"> <label for="q1v1" name="" class="css-label">A</label>  &nbsp;&nbsp;&nbsp;&nbsp;</font>
<font size="6"><input id="q1v2" class="css-checkbox" onClick="traloi[1]='B'; dalam('#acau1');" name="q1" value="v2" type="radio"> <label for="q1v2" name="" class="css-label">B</label>  &nbsp;&nbsp;&nbsp;&nbsp;</font>
<font size="6"><input id="q1v3" class="css-checkbox" onClick="traloi[1]='C'; dalam('#acau1');" name="q1" value="v3" type="radio"> <label for="q1v3" name="" class="css-label">C</label>  &nbsp;&nbsp;&nbsp;&nbsp;</font>
<font size="6"><input id="q1v4" class="css-checkbox" onClick="traloi[1]='D'; dalam('#acau1');" name="q1" value="v4" type="radio"> <label for="q1v4" name="" class="css-label">D</label>  </font>
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<p style="line-height: 300%;"><img src="dethi_img/5.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/16.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/17.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/18.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/19.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/20.jpg"></p>
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</p><div style="margin:0px 0px 0px 0px"> 
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<p style="line-height: 300%;"><img src="dethi_img/21.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/22.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/23.jpg"></p>
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 <br> 
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<p style="line-height: 300%;"><img src="dethi_img/24.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/25.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/30.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/36.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/39.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/40.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/41.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/42.jpg"></p>
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<p style="line-height: 300%;"><img src="dethi_img/43.jpg"></p>
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